再生水廠 CAST 工藝脫氮性能優(yōu)化研究 蘇雪瑩 1，高永青 1，程秋音 2，曹婧 2，馬文 2，阜崴 1，張樹(shù)軍 1，馬淑勍 1， 孫麗欣 1 （1. 北京城市排水集團(tuán)有限責(zé)任公司科技研發(fā)中心，北京 100044；2. 北京北排水環(huán)境發(fā)展 有限公司 吳家村再生水廠，北京 100071） 摘要：本文結(jié)合某再生水廠循環(huán)式活性污泥法（CAST）的運(yùn)行現(xiàn)狀，分析了該工藝選擇區(qū)的脫氮潛能。 通過(guò)調(diào)節(jié)曝氣支管氣量，探討擴(kuò)大缺氧區(qū)對(duì) CAST 工藝脫氮性能的影響。結(jié)果發(fā)現(xiàn)，擴(kuò)大缺氧區(qū)有利于充 分利用進(jìn)水中的 COD 進(jìn)行反硝化，出水 TN 穩(wěn)定低于 15mg/L。通過(guò)工藝優(yōu)化，可以強(qiáng)化 CAST 工藝脫氮 性能，節(jié)省曝氣能耗并減少碳源投加量。 關(guān)鍵詞：CAST；缺氧區(qū)；脫氮；曝氣 中圖分類(lèi)號(hào)：X703 文獻(xiàn)標(biāo)識(shí)碼：A
Research On Optimization of Nitrogen Removal Performance of CAST Process in Water Reclamation Plant GAO Yong-qing1 , SU Xue-ying1 , CHENG Qiu-yin2 , CAO Jing2 , Ma Wen2 ,FU Wei1 , ZHANG Shu-jun1 , MA Shu-qing1 （1. Beijing Drainage Group Technology Research and Development Center, Beijing 100044, China; 2. Wujiacun Recycled Waterworks, Beijing Drainage Environment Development Company, Beijing 100071,China) Abstract: The nitrogen removal potential of selector was analyzed by combining the running status of Cyclic Activated Sludge Technology (CAST). The effect of expanding anoxic zone on nitrogen removal performance was discussed by adjusting aeration. The results showed that expansion of anoxic zone was beneficial to make use of influent COD to denitrify, and effluent TN was stable below 15mg/L. Process optimization can enhance nitrogen removal performance of CAST, save aeration energy consumption and reduce dosage of carbon source. Keywords: CAST; anoxic zone; nitrogen removal; aeration
Research On Optimization of Nitrogen Removal Performance of CAST Process in Water Reclamation Plant GAO Yong-qing1 , SU Xue-ying1 , CHENG Qiu-yin2 , CAO Jing2 , Ma Wen2 ,FU Wei1 , ZHANG Shu-jun1 , MA Shu-qing1 （1. Beijing Drainage Group Technology Research and Development Center, Beijing 100044, China; 2. Wujiacun Recycled Waterworks, Beijing Drainage Environment Development Company, Beijing 100071,China) Abstract: The nitrogen removal potential of selector was analyzed by combining the running status of Cyclic Activated Sludge Technology (CAST). The effect of expanding anoxic zone on nitrogen removal performance was discussed by adjusting aeration. The results showed that expansion of anoxic zone was beneficial to make use of influent COD to denitrify, and effluent TN was stable below 15mg/L. Process optimization can enhance nitrogen removal performance of CAST, save aeration energy consumption and reduce dosage of carbon source. Keywords: CAST; anoxic zone; nitrogen removal; aeration
